Automatic suction relief valve and audible signal for tank car segregators



Oct. 2, v1945.

D. SAMIRAN AUTOMATIC SUCT'ION RELIEF VALVE AND AUDIBLE S"IGNAL FOR TANK CAR SEGREGATORS Filed July 13, 41943 mmml Patented Oct. 2, 1945 UNITED* STAT Es orf-ICE AUTOMATIC sUcTroN RELIEF VALVE AUDIBLE SIGNAL Fon TANK CARSEGRE- Gn'rons y l David Samiran, Osborn, ohi Appucatin July 113,.1943,"seiia1 N. 494,552

11 claims,YV (c1. 1161-138) (Glantafunaerfthe "act crimen s, 1883, as amended VApril 30, 1928;I 370 0., Gr. 757) A will become apparent 'from the following descrip- The invention described herein may be manufactured and used by or Vfor Vthe 'Governmentl for governmental purposes, without the payment nto me of any royalty thereon. v

This invention relates to suction relief valves for fuel delivery conduits for relieving the suc.

livery systems including a fuel .delivery suction conduit, a fuel delivery pump for creating suc. tion Within the conduitA to move the fuelthere-y through,.and a fuel segregator at 4the intake end of the conduit operable to automatically close the conduit to interrupt the :flowl of fueltherethrough upon the presence of a foreign liquidin .thef fuel being pumped having a different specific gravity from the fuel,in which the venting .means in.. cludes signal means, operable to produce a signal. when the venting means. is in venting position.

A further object is the provision of automatically operable venting :means for liquiddelivery suction conduits, for venting the conduit to relieve. the suction therein, in which the venting meansv is provided with audible signalmeans operable when the venting means isin venting position. f

A still further object is the. provision of suction operated venting meansl for fuel, delivery suction conduitsk operable by the suction inthel conduit when the same reaches apredetermined degree to admit a suction relieving fluid into the conduit to relieve the suction therein, and including fluid operated audible signal ,meansassof ciated kWith said venting meansv to be operated by the suction relieving fluid medium, incident to movement of said last named medium `into vsaid fluid delivery Vsuction conduit. Y

A furtherl object -is the provision of suction pressure operated movable ventingv means for fuel delivery suction conduits having a suction relief port therein arranged to be uncovered'when the venting means is in venting position toadmit Vatmosphere into the suction conduit to r'elieve'tlrie suction therein, and a Whistle means on `the Ymov'- able venting means operable 4by movement ofthe air passing therethrough'into' said suction con# duit when the venting means is in venting posi#` tion. .A

tion, taken in conjunction with the accompanying drawing, in which reference characters refer to like parts inthe several ngures.

"Figi 1 is a fragmentary-side elevation of a portionV of a `fuerdeli'very 'system incorporating my improved Ycombined suction relief means and audible signalftherein,v the fuel segregator and fuel dlllivery suction pump being shown diagrammati- C y0 Fie; z'fisajeniarged vertical sectional view through thejs'uction relief means and audible signalstruct'ure, as `.lisclosed inl Fig. `1, showing the samein'closed orfinoperative position in full lines and'firr operative or venting position in dotted @Referring to Figi 1`of 'the drawing, the numeral lrindic'ates'a inuiddelivery suction conduit having my improved venting" means thereon, Vindicatedhgenerally at 2; The conduit l is Prefera'bly arigid, pipe'h'avingribbed ends lav and lb .to receivethe flexible h'osej conduits leading respectivelyjto th'e'liquid fuel segregator A and the fuel delivery'siiction pump B. 'The ,segregator A is a conventional devicejwhich maybe similar in con-l structionto that shownin 'my patent No. 2,311,- 697; for-closin'gjthe fuel intake end of the conduit I Y vvherraliquid 'of a different specific gravity fromptneufuerbeingipumped 'passes into the inlet. 'lluiepurnp' B is ofconventional construction, cre'- ating 1a' suction pressure within the conduit I to cau'se tneffu'ei te pass through the conduit and pumpand bev discharged through the fuel dis,- narge 't conduit `Bf o'nthedischarge,l or outlet. slidefo-ffthe pump. Y r 4 jjlThe conduit l is apertured at 3 to receive the hanged-housing or cylindrical sleeve member 4,' extending through the opening into the conduit l' and terminating in an annular flat valve seat 5.; The`v -anged'portion 6 extending from this housing is secured to a saddleA member l, welded or orotheryvise secured to the conduitV I and thek means: securing the housing tothe saddle member-lis indicated at-8. The interior of the sleeve member 4' is preferablycylindrical, and has spaced annular' detent receiving grooves 9'and sndablyf nquntedwithin trie-sleeve'r member a 1s a cylindrical 'piston o r valve member Il havmg ahead ul2 atoneend4 terminating ,in 1a. seal,-

Other objects'andfadvantages ofthe "invention 55 51 of'` the yiiprising 4. une] interior cf this Vvalvey member'll `1s open above' the seat f5.' as senin Fig, `2, to' provide lacentral venting'passs. ygell Eating.' a iSeries. "0f suction `relief vous delivery conduit I.

- ing through the wall, adapted to be uncovered to YAn audible gn cured in the upper end by suitable fastenings I1, this whistle device bei" 110 lng formed of two thin concav she'etimaterial members IBa and I6b, each'havinrgv'aperturesI6c and I6d therethrough to produce an audible signal the suction or partial vacuum Manual means for movingthe pistonvalve in the form ofa handle memberY I8;

A springV loaded detent elementfi'is'utilize toi" releasahly retain the pistonlvalve in either its no osf'tinssaid detent'eltive diffre c'e between thegatniospliericprsaireextenorforthe tendria l and' the partial;Y

the. luevijce';,ti1 l 'ump 5B1 uiimV suctioni. within' tlfief l tobeintrodued through' Yuner interior ofitnionduit, h the ,pmpfanddisch'arged atV n, the 'event "f water, dilferentspecic grav- "pump'e'd', passingfinto the fluid .Sgfgto del/ice Willk d lstnvhead I2, this increased suction' is sufficient 'tot overcome the tension of' the: spring 24 holding the 'detents `V2,!)1 andZI in the erwies 8, .0f the flanged( housi'ng'l, l the relief be inmediately Asnapped the drawing, Y the ports v1 nga sunstantially vfree vent- Y Y ilgfpassage through these'portsfbetween the at- ,V

in deiiedlmseiefifg- 2 whistle device V-Ilfis vsef of the venting passage I4` ,-7

"utilizing my improved automatic venting device,

thisproblemY is eliminated.

i i-Having' thus described my invention, what I f' the fcondit, causing the position', as shown vin Y Isc and Isa Qfpthewnisue,

ing suction within Vthe conduit to cause movementV offuel therethroughandliquid ysegregator means Y at the fuel inlet end .0ft'he; conduit yto interrupt uid rto eventually be drawn up into the delivery Y conduit and discharged through the pump. By

claim and desireto secure by'Letters Patent is: A fig Ignjafuel delivery system, including a fuel delivery suction conduit, pump meansV for creating suction intheconduit to draw a fluid therei, through, automatically operablesuction relief member II to its extreme `positions is provided means in communication with the interior of said 'j suctionf conduit-cemprising a freely movable Ysuc'- tionpperated relief valve movable by the suc-v tion in the conduit tovent the conduit to relieve the suction therein, releasable interengagling def Vtent means between the vconduitand. valve Vfor Vyieldablysupporting said/.relief-lvalve in closed position, releasableggby fp determined suction pressure ,within .the conduit zoiisrable the valvev tendingto mOi/.e the Same to allow the valvefreelytomove to its ventingv position 4under influence of the suction, andsgnal,nieansgassociated With vf said relief valvev operable uponl movement of the valve lto venting positionto indicate lthat said valve isi` in suction relief; position,

2. In a fuel delivery system-including a fuel deliverysuction conduit, pump meansfforV creatthe flowlof fuel thereinto!v upon the. presence of an excess quantityof a foreign liquid of different Ls'peciflc 'gravity in "the fuel vbeing pumped, suction 'operated relief valvemeans in said con-. duit betweenfsaid pumpand' said segregator, operable byapredetermined excess suctionwithin the conduit due to said interruptionfof fuel flow,- l tol-,vent saidconduit torelieve the suction theref in when saidsuction exceeds a predetermined intensity.

g3.' Ina fuel delivery. suction conduit, ventingk means inthe conduit to,r relieve the .suction therein.l comprising an annular. 'casing 'opening Y into the conduit, hollow suction-lperatedpiston valve means'having, an annular wall slidably mounted inthe casing tov-move axially-thereofjfrom nonventing position to: venting-positionlltoward the lsed 1n connection suelen-@searing whe l ting prevents any tendinterior/of theY conduit, said-valve meanshaving a suction relief port-formed in the-wall thereof in communication withl'atmosphe're through the hollow portion-'constructed and arrangedv tov be closedv byr said casing whenthe vvalve is in `nonl venting polsitionfand uncovered to vent 'thesuction conduit when the venting positiomY i" l I v 4. In a fuel deliverA fiction' con'duit,jventing means in the Vconduittti-"relievetlfiesuction thereinQ/sai'd venting-`means comprising'` anannular Vcasing 'openinginto thf conduitjsuctionoper' Y Y ated jhollow lpiston valve o means; s lidably y mounted" within the `casing to move axially'tlgiereof toward' thewintericr ofthe conduihsaidv'alve means havjf 'a suction `relief Yport,in itsfwallifadjacentone endg; thereof,` constructed and Karrangedfto"y beV 'closedbysaidcasirigwlle thevalve is in closedY i! Y position, and to be n'cpveredwhen thewalvelis means between the venting piston valve andsald casing', yreleasably maintaining-the piston valve in non-venting positioni lreleasable Vupon applle ing into the conduit, suction operated valve means slidably mounted within Ithecasingl-toinove axially thereof towardlthe, interior ofthe conduit, said valve means comprising a piston head having an annular wall forming a central venting passage leading to atmosphere, and a suction relief port extending through said wall adjacent the piston head thereof, constructed and arranged to be closed by said casing when the valve is in nonventing position, and uncovered when the valve is moved inwardly toward the interior of the conduit to venting position, releasable detent means between the piston valve and said casing for maintaining the piston valve in non-venting position, releasable upon application of predetermined suction pressure on the piston valve to permit the same to move under the influence of said suction pressure to venting position, and a Whistle disposed in said valve in the venting passage, operable by air passing therethrough to relieve the suction in the conduit when the valve is in venting position.

6. In a pressure operated suction relief device for fuel delivery suction conduits, a tubular casing member fixed on the conduit having a central venting passage extending therethrough in communication with the interior of said conduit, said tubular casing having spaced detent receiving grooves formed in the inner wall thereof, and a cylindrical piston valve member longitudinally slidable in the central venting passage of the casing member, having a disc shaped piston head extending beyond the periphery thereof, to sealingly engage the end of the casing member in said fuel delivery suction conduit, and formed with an unobstructed central venting passage extending axially through said cylindrical piston valve member, said passage terminating in a plurality of radial vent openings, extending through the wall of the cylindrical piston valve member adjacent the disc shaped head thereof.

7. In a pressure operated relief device for fuel delivery suction conduits, a cylindrical casing member fixed on the conduit having a central venting passage extending therethrough into said conduit, said casing member having annular spaced detent receiving grooves formed in the inner wall thereof, a hollow cylindrical piston valve member slidably disposed in said cylindrical casing member, having a piston head extending across its inner end beyond the periphery of the central venting passage to sealingly engage the end of the casing member within the conduit and formed with an unobstructed central venting passage extending axially therethrough to said piston head, said passage terminating in a plurality of radial vent openings extending through the wall of the cylindrical piston valve member adjacent the piston shaped head,detent means on said piston valve member alternately engageable with said detent receiving grooves in the casing, and cooperating Spring means for releasably holding said detent means in said detent receiving grooves.

8, In a pressure relief device for fuel delivery of, 9,` cylindrical venting'piston valvev member slid'- ably. disposed in thev centralzfventingpassage of; said cylindrical venting piston `member havingza' dlscshapedhead at its inner end, extendingbeyondthe peripherythereofyto engage the inner Y end of the casing memberadjacentthe conduit and formed with a .central .ventingy passage exitending axially through said.=cylindrical `piston; valve member to said disc shaped head and terminating adjacent said head in a plurality of radial vent openings extending through the Wall of the cylindrical valve member, detent means alternately engageable with said detent receiving grooves, cooperating spring means for releasably holding said detent means in said detent receiving grooves, and a suction operating audible alarm device carried in said central venting passage, operable by the air entering said relief passage to relieve the suction in said uid delivery suction conduit.

9. In a suction relief device of the class described, a housing having an unobstructed cylindrical venting passage therethrough formed with a valve seat at one end, venting valve means slidably mounted to move in juxtapositioned relation within the aforesaid cylindrical passage, having a central suction relief passage therein with a piston head at one end adapted to seat on the aforesaid valve seat and a plurality of suction relief ports extending through the wall of said valve adjacent the head, adapted to be uncovered when the valve head is moved off said seat, and suction operated whistle means positioned in the central suction relief passage of said valve between the end thereof and said suction relief ports.

10. In a suction relief device for suction operated fuel delivery conduits, a housing adapted to be secured to the fuel delivery suction conduit having an `unobstructed cylindrical vent passage therethrough, formed with a valve seat at its inner end, and annular detent receiving grooves adjacent its outer end, a hollow cylindrical venting valve slidably disposed to move axially in juxtapositioned relation to the aforesaid cylindrical passage, said venting valve having a flanged head adapted to seat upon the valve seat aforesaid when the valve is in closed position, and formed with lateral vent openings extending through the cylindrical wall thereof adjacent the flanged head, to be uncovered when the valve is moved to venting position to establish venting communication through the valve with the interior of the fuel delivery suction conduit, a Whistle member disposed in the hollow central portion between the valve and the ports, a handle member extending across the end of the movable valve member for manual actuation thereof, and resiliently operable detent means between the casing and the slidable valve for releasably retaining the valve in its aforesaid positions.

ll. In a suction relief device for suction operated fuel delivery conduits, a housing adapted to be secured to the fuel delivery suction conduit having an unobstructed venting passage therethrough, formed with a valve seat at its inner end, a hollow venting valve slidably disposed to move axially in juxtapositioned relation to the aforesaid cylindrical passage, said venting valve suction conduits, `a .y cylindrical casing member? xedon' the conduit having a central'longitudin'al venting -passagel therethrough :leading into said' conduit, Ysaid casing member havingA spaced detent receiving grooves formed in the-inneriwall there--A havinga ang'ed head adapted toseat uponfthe` valve seaty aforesaid V*when .the Yvalve is in Inon# venting position, and Jforned.v y'withi-lateiral vvent.`

Y openings extending through the .wall thereof? ach;z

jacent' the Yflanged .headyto kbe uncovered whenY the valve'isk moved to venting `positio`n,to''l'estzilo`;-

lish venting" communication .thnough'the' Valve.

Y with the interior of thefuel delivery,conduitfiY whstle member disposed the hollow portion: between the ports andthe texteriorj'of.thewatlve; 10'

a handle memberV extending crossthepe'nd'of`- thermovablel valve member V,for manual actuation;

thereof, resiliently operabledetent means betweenv retaining jfthe s ameini-ts aforesaid positions,v said detent means comprisinglfannular detent engngfVV ing; grooves-:formed in .said amged housing, tubu-f i 1a1?;\dete nt gu-ide; meanswextending diametricallythrough'said Venting valve, movable detent ball members disposedin-the opposite endslof Asaid tubularkdeteni; members forl selectable engagement withsaid lannular grooves in the casing, and springmeans in saidv tubular detent passage ifo'r yieldably holding said4 balls in seatingr engagement Ywith,Said.rarixlular grooves.-A 

